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Kaigas
Kaigas is the hypothesized first major glaciation or snowball earth in the Neoproterozoic Era, preceding the Cryogenian period. During the Kaigas, almost the entire Earth was covered with ice sheets up to more than a kilometer thick. == Geological context == The ice age was first identified in stratigraphic units in Namibia and sedimentary evidence for the glaciation is not seen in the South China Block where other Neoproterozoic snowball earth glaciations are identified from the sedimentary record. Instead, the presence of the Kaigas on the South China Block is identified through stable isotope evidence.〔Zhang, QiRui, XueLei Chu, LianJun Feng. Discussion on the Neoproterozoic glaciations in the South China Block and their related paleolatitudes. 2009 ''Chinese Science Bulletin'' 54(10):1797-1800.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Kaigas」の詳細全文を読む
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